I Need advice running Google Ads for plumbing services

Hey guys, I am just finished creating a new site for plumbing services and aside from doing the SEO, I am thinking to try a $100 campaign for google ads right now.
I don't have much experience with google Ads so first looking for a good PPC Ads training course. any recommendations please?

You have a few options now when it comes to running paid advertising. You could go down the usual route of PPC whereby you are charged for each click. Doing this in todays age of automated bid strategies will rely heavily on getting the correct tracking in place and obviously making sure the site itself if designed in a way to make people convert easily. It's a good paid solution as if your site, conversion points and ads campaign are setup correctly you can get leads at a very reasonable CPA. Your other option is to try out Local Service Ads (LSA). For these you don't really need a website though you will need to supply certain information and ideally insurance evidence to make the most out of the format. The good thing about this approach is that Google will only charge you for actual leads (connected phone calls and/or message enquiries). You also get more feedback on these leads as know exactly what has been driven via LSAs and can track the quality. The downside to this can be higher CPAs though it really varies.

$100 per day or month?

I think you should do keyword research first before running campaigns also do some competitor analysis