You could try this tool spyfu.com and analyze your competitors, find best long tai lkeywords. Hope this help, there's plenty of online tools on web these days for this kind of analysis.

Chose your keywords with high search and low competition. Try unique content marketing through blogs, and articles, Bookmarking is another content marketing trick. Share every thing on social media sites it help you to get traffic.

Try these technique if you not getting results than i will suggest you some more advice.

Hi,
Here are few free seo tools generally used try these:-
Google Analytics
Keywordtool.io
Moz Local Listing Score
Google Keyword Planner
QuickSprout Website Analyzer

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And there is a tool called similarweb.com which is a really great one.

Looking for free seo tools , try followings :-
- seoptimer
-quicksprout

Free SEO tools are:
1.Google Webmaster Tools.
2,Bing Webmaster Tools
3.Google Analytics .
4.Google Pagespeed Insights.
5.Google Mobile-Friendly Tool .
6.Open Site Explorer.
7.Google Keyword Planner.
8.Moz
9.Majestic SEO.
10.Ahref.
11.Copyscape.
12.Screaming Frog.
13.SEO Small Tools.
14.YoastSEO.

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1- Go to Google.com.br
2- Type your root keyword (product type) and without pressing Enter key, see the suggestions from google
3- Note these suggestions and apply same for other products
4- Use these keywords in title and description of your videos

Hope this is going to work for you!

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Use google adwords keywords planner tool to see how much competitive is your keyword in google search. After analyzing your keyword competition do keyword grouping and choose the best keywords.

You should try Google Planner.

Which ever method you choose, be sure to send quality backlink to your site if not it you will not make any improvement.

semrush.com is a good one.

HERE ARE YOUR TOOLS


Tools For Firefox browser:

SEOQuake:
https://addons.mozilla.org/en-US/fir...seo-extension/

AHrefs Toolbar:
https://addons.mozilla.org/en-US/fir...s-seo-toolbar/

SEO for Firefox by SEObook:
SEO for Firefox Extension: Free SEO Toolbar Firefox Browser Plugin

Google Global by RedFly:
https://addons.mozilla.org/En-us/fir...google-global/

SEO Toolbar by Moz
https://addons.mozilla.org/en-US/fir...bar-by-seomoz/


Tools for Chrome browser:

Moz Toolbar:
https://moz.com/tools/seo-toolbar

AHrefs Toolbar:
https://ahrefs.com/labs/seo-toolbar

Nofollow Checker:
https://chrome.google.com/webstore/d...pdijmiid?hl=en

Google PageRank Checker:
https://chrome.google.com/webstore/d...kmcekhcg?hl=en


Tools by Google:

Google Search Console (formerly Google Webmaster Tools)
https://www.google.com/webmasters/tools/home?hl=en

Google Analytics
Google Analytics - Mobile, Premium and Free Website Analytics ? Google

Google Keyword Planner
https://adwords.google.com/KeywordPlanner


Major Web-based Tools:

https://ahrefs.com/
https://alexa.com/
https://majestic.com/
https://moz.com/
SEMrush - service for competitors research, shows organic and Ads keywords for any site or domain


Other Helpful Web-based Tools:

https://prchecker.net/
Bulk Pagerank checker, Domain age, Alexa rank, Dmoz. BulkSeoTools.com
Trust Flow Checker
Bulk DA Checker - Domain Authority Checker Tool, Moz Authority
Free MozRank Checker Tool Online Check Bulk DA, PA and Moz Trust
Keyword suggestion tool — Google suggest scraper — Übersuggest
TropicalSeo - seo reporting tool


Social Checker Tools:

Social Count Checker - Check Your Social Signals
Social Signals Check Facebook, Twitter and Google+
http://socialsignalshark.com/social-signals-checker/


Social / Niche Research Tools:

https://followerwonk.com/
Real Time Search - Social Mention
Twitter Search, Monitoring, & Analytics | Topsy.com


And yes, similarweb.com is good, I recently learned.. but I still have to explore it a bit more.

If you type your main keyword into the search bar on Google and hit enter, the page that comes up, has at the bottom of it, other long keywords, that people will also search for in that niche. You can then use these keywords to enter back into the search bar to get even more and so on.

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You will have to learn how to use google keyword planner because this is best tool for searching best keywords.

Hey,
Try these generally usede free seo tools avialable for you.:
Google Webmaster Tools.
Google Analytics
Google Keyword Planner
Google Pagespeed Insights.
Google Mobile-Friendly Tool .
Open Site Explorer.
Google Keyword Planner.
Moz
Majestic SEO.
.Ahref.

Here are some cool tool:
1. Small SEO Tools
2. Google Analytic
3. ahref
4. seoptimizer

Main keyword tools & analyze your competitors:
semrush.com
spyfu.com
serpstat.com

You can use Google analytics,Moz or Google keyword planner.They are all free.

There are many SEO tools & resources that will help you a lot in bringing traffic to your videos and also to your blog. Some of them are:
1. Majestic SEO
2. Uber Suggest
3. SEO Quake
4. Mozbar from Moz
5. Semrush (Premium Tool)
6. Authority Labs
...and to know more check out Free SEO tools & Resources

WooRank.com is another great tool to analyze your site's SEO!

how get search your post in google news search??