Hey guys, been lurking around this forum for a while and would appreciate some feedback on this build. Mainly going to use it for gaming, 2d art, torrenting & surfing the net)

(CPU) Intel Core i5 6500
(mobo) Gigabyte B150M
(HDD) WD Blue 1TB
(SDD) Kingston SSDNow UV400 240SSD
(PSU) Superflower Leadex Gold 550W
(RAM) ?
(GPU) ?
(Chassis) ?

I haven't exactly included a budget ballpark figure as I don't really know how much I ought to be targeting and as you might've guessed, I'm still undecided about the last three. Also, since this is my very first time attempting to build a PC, I have a few questions that hopefully somebody could help me out with:

1. will I need any additional components to connect to my home wifi?

2. just wondering how it will compare to a laptop? i'm using an i7 16gb dell xps 13. haven't really played around with many desktops so i'm curious.

3. i've been reading up that i'll probably only need a screwdriver and some thermal paste to build the PC. am i missing out anything crucial?

4. the area i live in is quite prone to lightning. would it be advisable for me to get some power surge plug for the PC?

5. i'll be in and out of the country intermittently and the PC might not be switched on for 2 months at a time. would this potentially slow down/ spoil it?

6. is it worth it even building with these stats or would it be more economical for me to buy a premade PC?

7. okay, last question. would it make sense if i opted for a Dell U2515H or U2715H monitor? i have this idea of using the monitor interchangeably for this PC and as a second screen for my laptop (depending on which one i'm using at the moment). is it even feasible for me to use a monitor like this?

Sorry if some of these questions are in the wrong thread (I hope they aren't!), I'd appreciate tons if somebody pointed me in the right directions, and of course, many thanks for even reading through this post!

Awesome! Thank you so much for replying. Aha, think I'll have to work my way up to "fancy" accessories since everything is really expensive lately.

Anyway, think I've decided on the components. What do you think?
(CPU) Intel Core i5 6500
(mobo) Gigabyte B150M
(HDD) WD Blue 1TB
(SDD) Kingston SSDNow UV400 240SSD
(PSU) Superflower Leadex Gold 550W
(RAM) Kingston 8GB
(GPU) MSI GTX1060
(Chassis) Tecware

I'm not sure if I ought to get 16GB RAM since I'm one of those who ends up with 60 browser tabs without realising, with multiple apps open. Not sure if its worth it. Maybe I should just kick the habit instead and learn minimalism lol.

Also, slightly confused by all the different brands. Are there any benefits to sticking with a particular brand for parts or can I just get the cheapest around (e.g. Kingston vs MSI vs Gigabyte)?

Help much appreciated (seriously, thanks again man!!)

Ah ic, would there be any particular brand in the market now you'd recommend instead? if it's 27 inches but cheaper :S
I'm mainly looking for something that's more accurate colourwise because I'm planning to use it for art and some minor photo editing. Doesn't matter as much with gaming.

Alright, got it. Thanks! I guess it's time to eat maggi for a few months..