I think a worthy addendum to (1.) is to review the 'default' subreddits that your new account is auto-subscribed to (unsure what the current list is, but probably stuff like /r/news, /r/funny, /r/videos...) and unsubscribe from the ones you don't/won't like.

Reddit of course has its issues but by working through and around them it's still an amazing site - not because of its features or politics but because of the discussions and communities i.e. users of the site. The default subreddits are generally awful though.

I use the RES extension on my PC and the Reddit Sync app on my phone and would recommend both.