Bitcoin is the most reliable coin to buy this time. Less risky compared to investing in altcoins. But if you want to diversify and not contented in just one coin, you can look for other alts that are already establish, just be careful.

Anyway, you dont need to look for other crypto related groups for similar topic. This forum is already full of information that you need about crypto. Just use the search button to get the answers of what you're looking for.