What's your question? Ask

Like Japanese knotweed, getting rid of running bamboo takes persistence. If you are willing to use herbicide, cut the stalk just below the lowest node. The stalks are hollow so pour in glyphosate (Round-Up). Do this for each stalk. If there is any regrowth, hit the leaves with glyphosate. You can try to kill it by mowing, and mowing and mowing. Eventually, the deep root or rhizome will run out of energy and die. Obviously, you need to mow at least weekly so you deprive the plant of photosynthesis. Heavy tarps can be put over the mown stalks; however, the root is capable of traveling quite a ways to find the end of the tarp and shoot up there. If you want to try the tarp, effectively blocking photosynthesis, you must place vertical barriers to keep roaming roots contained. Then there is digging and seeking out/ sifting the soil for all the underground roots. I would probably employ a combination of technics and the choice depends on how large an area is involved. There is a WikiHow article that you should check out and I'm sure someone has posted a YouTube on the topic. Good luck

It is best to fertilize these in spring. Just one time per year will be enough. As long as you use a balanced, all-purpose fertilizer, then you will be ok.

Here is a link with more information: https://www.gardeningknowhow.com/ornamental/foliage/bamboo/caring-for-bamboo-plants-in-your-garden.htm

Almost impossible. I have it coming under my shed floor and under my fence, all from next door's garden. The roots are not all that deep, and travel vigorously horizontal. The most effective way is I'm afraid to dig it out, spraying the leaves with the most effective product on the market is only mildly effective. However if you know a friendly farmer who has access to something that will poison the roots then try that, but it may contaminate your soil, and you should use sturdy hand, skin, and eye protection.

It would be best to find out exactly what species you have (there are over 1500) and look up whether that one is edible. Some bamboos have a cyanide compound in the shoots and need to be cooked thoroughly (by boiling) to remove that compound. However, all the species are thought to be edible after cooking. As long as you can be sure it is a species of bamboo, it should be possible to boil it to make it safe as described here:
http://www.cfs.gov.hk/english/programme/programme_rafs/programme_rafs_fc_02_05.html
If it tastes bitter after boiling, it probably still has some toxin in it.

It does show signs of overwatering from the yellowing tips. Depending on how crowded it is in the pot, it may need to be up-potted. Bamboo can be fertilized with a general purpose fertilizer, slow release fertilizers prevent over fertilizing. This article may help you
https://www.gardeningknowhow.com/ornamental/foliage/bamboo/growing-bamboo-in-pots.htm

Bamboo stalks are often shipped in a gel to keep them from drying out while they are in shipping. The gel is no longer needed, so you can wash it off and then place them in water. You can also remove anything that is keeping them bundled together as long as they will stay upright in their new container, perhaps with the help of some marbles.