i would say start slow as well.
i just went through and spent over a week trying to get all my mods compatible, i was using over 200.
but it can easily break your game, like it did mine, even if you take all the necessary precautions.
Once you pick a few mods you like, you need to read up on how to use a mod manager like NMM or Wyre Bash, you may need to create patches for certain mods to work together for that you would use Wyre Bash. You may need to clean some mods that can cause instability in your game, you need TES5Edit for that.
also need to make sure youre load order is correct, you can use BOSS, but also reading all the documentation with the mods you get, especially the compatibility sections. so you know which mod should be before/after another mod in your list.