Help! Help I need some help please...nooob

$100 is more then enough. If you get your ctr high and keep your clicks low, you can end up spending hardly anything and having a lot of conversions. How? Well, targeting is a great way to keep the cost of your clicks (cpc) very low.

1.I wanted to know is 100$ good enough to test a campaign to see if it will convert?

$100 budget is good enough for most lead gen cpa offers (payout < $15). But with a offer payout more than $20.00 it will take a bigger budget.

2.How do I go about advertising in different countries? (they seem to work better than u.s offers)

Go international, less competition, lower CPC/CPM, means you earn more! You can buy worldwide traffic from adwords, facebook ads, pof, cpv/ppv network and media buying exchange platforms.

3. As far as a landing page, do I basically build it around my offer? Any good tutorials on setting one up for a CPA offer?

Build it around the offer, demographic and your marketing angle. Do some searches on this forum you may find a lot of information about this.

4.This one might be dumb but, when advertising with PPC where are these ads shown. On different websites? search engines?

Shown on search engines mainly, and their partner sites.

Thanks for the great info, guys @mtmjohn, great answer I appreciate that.