When you're first starting out, and have a small viewership, affiliate networks are very helpful. Most don't require you to have a huge following && it's pretty easy to sign up. They are also fairly self explanatory when it comes to using the affiliate links [user friendly].
It's tempting at first to spam every post with affiliate links. Don't do that. Your readers will be turned off by this. Also, don't have a sh*t ton of ads all over your page. It's disgusting and unappealing to the eye. It's okay to have a few of your favorites displayed, but nothing is more gross than 20 ads flashing all over a blog page. Srsly.
At the moment this post goes live: I have 1 listed under "Favorite Products" on the side bar, 1 TEST link under my header [it's a really good promo right now, aha], and 1 at the bottom of my page. The key to this is that I only display ads for products that I use, love, && often talk about. I don't talk about them to advertise, I advertise because I love them. Most people ignore banner ads alone. Blind click rates on banner ads alone are very low. You won't see much from that.
When you're writing a post about something that you are affiliated with, place it in your post. This goes for Amazon affiliation too. The key here is to be strategic && again, NOT spammy.
Some bloggers like to have a dedicated page with affiliate marketing. I haven't tried this yet, but it's been on my mind. I wouldn't use this as an excuse to have a page just loaded to the brim with random banners. It'd be a good place to list affiliate links & maybe banners to things you often talk about. Like for me, I'd use ELF, Julep, Mt Baker Vapor, and Audible/Amazon books. Think of it as a one stop spot for resources for your readers.
Just remember always: Being spammy is Ew << make that your mantra
The Top 3 Affiliate Networks that I've had the best luck with are:
I have had the best luck with Share A Sale, then Glitter Network, then CJ Affiliate. I also think that Glitter Network && Share A Sale are more user friendly.
Good luck and remember to love what you do! <333