Hahaa oh yeah, misunderstanding at it's best, lol
Well there are online websites like www.mangahere.co
where you can find many different genres.
I am guessing you would like to read the genre called "Seinen" which targets men older than 20-25 and involves with yakuza, historical, political, sports and serious stuff... Then I recommend one specific manga called "Vagabond" it is fantastic. It is my favorite genre actually (LOL) but yeah I read all since I draw similar things and enjoy reading manga in general.
You can practically pick and read any genre. Keep in mind that this stuff is coming from the Japanese "mind", meaning you can see any type of weird thing in any manga -.-' lol
One thing you should know, manga reads from right side to left side. Frame order in pages, that is. So you will be reading and looking at frames in a page, from right to left... Opposite of western comics.
Good luck xD