julianzh: Your grapevine, "Concord" variant, looks great, super healthy, but it is at most in its first year, possibly start of the second year. Don't prune anything until it matures sufficiently so you can discern "which way it is going". LOL. Main cane should be 4-5' before any pruning. Like which are going to be just buds, and which are going to be shoots off the main cane. I would love to help you at the end of this season if you send a picture. Right now, just let it grow! Next early Spring, Feb.-Mar. is pruning time, then you want to save one primary cane, (or two) and hard prune back all side shoots off those to the second bud on each, no more. Note: If in this growing year, you can easily identify a secondary shoot off the main, then you can favor that secondary, and prune off any other side shoots, to preserve that shape with two "arms". Note: It may be possible to train it as a scarecrow, with four arms, as most "Concord" variant/cultivars are aggressive fruit producers. Difficult to advise on grape pruning, without the aid of pictures, BUT, come Spring next year, you will have to think about some sort of a trellis to support the two main "arms"? Think of that scarecrow analogy. Two arms, one on each side, with all the off shoots on each, pruned back to the second bud. I always have a drink of something "fortifying" before I go out to prune my many grape vines in early March, because one must prune off a lot of the vine. PS. You can save your cuttings, making certain which end is up, (I cut at an angle when pruning to know which end is down) then I scrape a small bit off one side of the angled cutting, dip it in rooting hormone, and start it inside in a warm spot until it starts leafing out. I have about 50 grape vine cuttings rooting right now in the basement, some of them "Valiant" , another "cultivar of "Concord". Keep in touch. Cheers! One last note: I made a fair penny selling rooted grape vine cuttings to my neighbnours and anyone who drove down our street and fancied grape growing!