Well I actually found a bit while Ive been learning English. Some English nouns are also used as verbs. So Ill tell you an easy way to makes verbs up in Japanese. Like this:
Ramen is a noun. Its a food genre name, generally, and a meal, too, so its basic usage is as a noun. Despite that, this article about Ramen is created verb from noun. Its neat!
In this case, everyone who knows Ramen could imagine ramen needs cooking, making and then eaten, so you can suppose what the article author meant.
If you know Ramen shop in Japan, you could imagine much more fantasy. The ramen shops have some toppings and you can order the way you choose to taste, plus noodles and so on. (Like Subway sandwich) I mean the noun has the image which as if you are doing something(eating ramen, making my ramen), thats why we can image if the noun suddenly became verbs.
Here is my opinion to those who have been learning English, and Japanese who use Japanese as their native language.
In English, when a noun is used as a verb, it would be the same word and the same form. Such as in the ramen case.
However, in Japanese case, it couldnt work as well as English if it was only a noun even though the grammar was correct. You would add ing in English. So, let me explain something about adding ing in Japanese.
In Japanese, you can create your verbs. Like, if you want to say Im eating ramen, when you forget eat and eating in Japanese, you can say Im ramening. This is very simple, and you can make up with a verb from noun. In Japanese, add tteru. In ramen case, Im Ramen tteru. When you want to say Im drinking coffee, you can say Im coffee tteru. Its such a casual word, but you dont need to mind that because its your made-up word.
A lot of nouns could be verbs if it was easy to imagine for people. Such as Tokyo, Im Tokyo tteru. I can imagine you want to say, you are at Tokyo, or you are visiting or sightseeing etc. If you said you were the police tteru, I would worry and ask you what happened. Like that. Also, the past tense is tteta. Im ramen tteta means I ate ramen. You can memorize only two phrases. tteru and tteta. Then you can get every usage of verb and form.
This is not polite Japanese, but some people use it casually. Tteru means am/are/is doing. Tteta means was/were/ doing. This usage is usually able to work. When you have a chance or are in trouble, try this out. I hope this could help you then. Enjoy speaking Japanese.