English should absolutely be your first language to learn, but I wouldn't say it's easy to learn. It can be quite confusing for someone whose language structure doesn't even resemble it. What it is, in comparison to other languages, is more compelling. You get much more access to a lot of media, you get to understand popular songs firsthand, etc.
There's a few languages that are easy to learn for me and any latin-based language speaker, and that is other latin derived languages: Spanish, French, Italian, Portuguese all share similar heritage and grammar, to an extent.