Before you can start traveling between dimensions, you need to understand that it's not just about the destination, but about the journey. Or the portal gun.
Not all dimensions are created equal. Some are more... dimensional than others.
You'll need to know how to read the signs, symbols, and hieroglyphs that litter the multiverse.
Don't forget to pack for the local gravity. Some dimensions have it, some don't.
Be prepared for the time-traveling consequences.
Learn how to blend in, or risk being turned into a toad.
Taste the local flavors. Or not.
Or, if you're feeling adventurous: