You can do better than me.
Want to learn a language? Just do it! Seriously; there is no better way than just to hop in. If you are seeking, the right methods will fall into your lap. Those that suit you. Everyone learns differently. Speaking helps everyone though. There are translators who do pretty well translating but still miss the point sometimes because they never speak. Speaking style creeps into writing style; especially editorial style.
Meetups --- go there armed with some earned skill first. It is not the place to learn so much as a place to pratice what you've learned and therefore grab more words. Words stick to more words like when you roll a small snowball and it grows when other snow sticks to it. Trust me on this.
What language do you want to learn? You don't have to have an excuse. Just wanting to is enough. I wouldn't discourage someone from learning Ojibwe or French. There are some 7000 languages in this world. Materials are out there for a great many. Perhaps you'd like to go where nobody except natives have trod. A language without a textbook? Why not?
Well funded libraries have foreign language materials and foreign books and novels free for the borrowing. I've even seen Pimsleur and Rosetta Stone stuff there. It is amazing, really.
One library I am a member of had all of Rosetta Stone's materials free online for their members. Crazy!