To fully understand the divisions of the elves, read The Silmarillion. In The Lord of the Rings, the following types of elves are mentioned. The Noldor Known in LotR as the "High Elves," these elves are from the West in Valinor, and have seen the Light, and are the mightiest and most powerful of the elves remaining in Middle-earth. By the Third Age, their numbers were greatly diminished, and most, if not all, had sailed into the West. There is a long and tragic history behind the Noldor, but, again, it is necessary to read The Silmarillion to learn of this. Galadriel is of the Noldor, as was Gil-galad. Elrond also had more than a little Noldorin blood. The Sindar These are the noble and royal wood-elves. Thranduil, the Elvenking in Mirkwood is of the Sindar, as was Amroth, late king of Lorien, and Celeborn, husband of Galadriel. The Silvans The wood elves of Lothlorien and Mirkwood. The "common" elves, so to speak. Haldir and his brothers are Silvans, as are the elves in The Hobbit.
Friendly
No. There would be some reference to the Elves and Men mixing there. But there is not. They are separate races, and though they trade, they are not related.
They are talented craftsmen
In the Hobbit, King Thranduil of Mirkwood, the Wood Elves' king, liked his wine from Dorwinion. His wine was also imported by the Elves of Mirkwood in barrels down the Forest River from Long lake.
If you are referring to the book "The Hobbit," we aren't told exactly. We do know that elves and dwarves had a long-standing grudge against each other. But it does seem as if the elves were trying to trap them, or at least to create an excuse for taking them prisoner. The elves in "The Hobbit" were more like the elves in Celtic folklore - silly, tricky, deceitful little fairies - than the regal, mysterious elves in "The Lord of the Rings." Legolas was a Mirkwood elf, one of the people that the dwarves encountered in "The Hobbit," and was not considered the equal of the Lorien elves.