Trump was supportive of Hillary and held many of the same views as her. He's in favor of gun control, he's pro-LGBT, and is pretty similar in other domestic regards. He's barely different in immigration, with wanting stuff we already have like border fencing in larger quantities, and more tracking in cities with larger migrant populations.
The bigger differences come in foriegn policy though, which, if Gary Johnson wasn't running would get him my support. He's in favor of coming to terms with other countries usually considered our enemy and wants to disband NATO, which, especially for America, has long outlived it's purpose and poses more danger than it deters.
Bernie Sanders is basically doing the same thing Ron Paul did, by being an old guy having a revolution and recruiting millions of young folk for support. He even stole Ron Paul's logo for f*ck sakes. And if he had went the full path he'd have gotten the respect of many more voters and more folk would probably respect him, myself included, especially if he had joined the Greens and declared open season on the Democratic Party.