Because so many young voters are considering voting Libertarian or Green, the Campus Election Engagement Project has put together a concise nonpartisan resource on the trade-offs of voting Third Party this election, offering historical perspective on the strengths and downsides of Third Party choices.
For anyone voting by absentee ballot in your home state, they also have nonpartisan candidate guides up on the Illinois, Indiana, Missouri, Nevada, New Hampshire, North Carolina, and Pennsylvania Senate races, with more guides coming shortly on their Guides Page. There are also Presidential and Supreme Court guides, with four-party and Spanish versions available here. Also check out the state-by-state voting rules to make sure you’re ready to vote before election day on November 8.