This app was mentioned in 2 comments, with an average of 1.00 upvote
maybe, i don´t remember i don´t have the books at hand. There are an app, called: "D20 Complete Reference for DnD" for android, can help you to find the feats you need, (https://play.google.com/store/apps/details?id=com.vansteinengroentjes.apps.ddcompletereference)
Yeah, the SRD is one of the most comprehensive and accessible versions of Wizards' open source content. Its biggest downside is that it can't include character development info, which is a legal requirement of WotC's open game license stuff. Unfortunately, since the official books are out of print, you'll likely have a hard time tracking down legitimate content outside of the occasional Player's Handbook that goes up on eBay.
I'm personally a fan of the d20 Complete Reference app if you have Android devices; it stores all the SRD content locally and is eminently searchable, plus you can download a bunch of custom content for free from the website.
For character sheets I'm preferable to either the interactive character sheet for physical versions or the d20 Character Sheet if you prefer digital.