... hey there Ah Chuan... welcome to the uh... winderful world of tennis... it's quite simple when you look at people playing, and wonder 'i can do that'... the truth is it requires a lot of training and time till you can even attempt to have a casual style of play... not trying to scare you, but just to prepare you... it's not like badminton or ping-pong where you can just pick up a racquest/bat and start consistently returning shuttles/balls... so be prepared to spend some time learning the sport... don't get discouraged because i know a lot of beginners get frustrated when they can't master the basics quickly...
...well maybe pooh88 can guide you better on this, but basically, beginners will want to use a lighter racquet with a bigger head >100sq. inches... a man can probably handle a heavier racquet, which will help in power generation later on, but other than that, a beginner, be it male/female can use any beginner racquest i described... preferably a guy will not buy a glossy pink racquest though

... for beginners, probably get a cheaper racquet, since you don't want your RM400++ racquet to be chipped/scratched or even broken when learning how to play... but if you don't mind about the money, get the best (usually the more expensive) first time...

...brands, like price are not that important for beginners... i wouldn't say one brand is better for beginners than another... a reputable brand will have a suitable racquet for whatever level in its range, so pick one you like (or you favourite player uses) and select from its beginner range...

other than that, welcome again to the sport and happy learning!