Will this site be strictly about the general principles and process of learning a new language or can it also suggest web/print resources for learning specific languages?
Proposal: Language Learning
Here's the most recent thing I can find on Meta.SE on this perennial question. It's specific to books but the same principles apply.
Basically, the rule/practice seems to be, individual sites can choose to allow or forbid recommendation questions, but even if they allow them, each question must have a problem to be solved which provides enough context for one answer to be judged against another.
For example, this is a "bad" question even on SE sites that allow recommendation questions:
What resources are there for learning Chinese radicals?
...because there's no way to rate answers beyond "Yes, that's another resource on learning Chinese radicals", and there's no room for an answer to be anything more than "X exists, it does Y, here's a link".
This, however, could be a "good" question:
Is there something portable, physical and visual I can use to practice Chinese radicals while travelling? (not an app)
...because answers can explain how they solve the problem, and voters have objective criteria to compare answers against.
(don't be distracted that one is "what is there..." and the other is "is there anything...". People sometimes get hung up on the idea that good questions should only have one right answer. It's okay for there to be more than one right answer, so long as there's enough criteria that there's some objective way of comparing answers against each other as being a more or less complete or efficient solution to a problem)
The entire SE network tends to look unfavorably on resource request questions, because they tend to fall into two broad categories which are off-topic:
These are questions without a single "correct" answer. Asking for lists of Spanish-English dictionaries, French Thesauruses, and German learning courses are all examples of this. There are often countless correct answers, making them not fit for SE.
If you can word the question to be specific enough, it might work. "Is there an official Spanish dictionary?" (Yes: rae.es) "Are there any English-X dictionaries?" (where X is an obscure language) might work, too, as you're not looking for a list of resources, but just for whether a single one exists.
Most questions asking for resources are asking for people's opinions on how "good" they are. For obvious reasons, SE doesn't handle recommendations well. And there are many sites which do! If this is your question, try amazon.com, goodreads.com, or google for reviews of the book/resource type you're considering.