How to start from 0 ? As a begginer?

[ManosMyName]

So basically my goal is to gain some weight. My physique is like lets say 0% it's being really long time since i workout i do know a few things about exercises but i don't know how i should start. I also had my hernia surgery before 1.5 month ago and now i am on my feet 3 weeks now.My physique for running 6kg a day is great but talking about exercises is a different story i have 0% stamina okay a lil bit more than that.

I have tried to do this exercises for strengthening my neck i pick 2kg dumbbells and i am only able to do a round of 20reps each set and i can't do more than that so i leave them for later in the day and then do them again xd
https://www.youtube.com/watch?v=KvULEgOKrEo

So even though my goal is to gain some weight, i've heard that you need to do like few reps with a higher amount of weight of dumbbell's when going for bulking. and since i can't even do that i am stuck and came to ask for some advice.

How am i supposed to start? I would prefer a week beginner's plan at home to follow. Since doing random exercises does not help. Like working out everyday arms and abs is not good so that's why i plan to follow an exercise plan if you could recommend with 2 days off if possible.

So my questions in short are:
1.How do you re-train and getting back your shape to be able to do exercises properly after a long time of period sitting of 5 months?
2.What should you focus on?
3.An exercise beginner plan to follow? or a link to take a look ?
4.How am i supposed to start in order to get back in shape?
5.What reps and sets to follow? Like more reps with less weight? Or what?
6.and then how should i head towards bulking? should i start increase the calories slowly should i just eat exact the amount that is required? What kind of exercises or reps should i follow when in bulking?

You can ignore question (6) if you like i mostly would like to know the answers to the other questions. And if you see my thread and you can't possibly answer all of them, then just simply answer in the question that you do know to answer.
I am looking for advice and tips. and i know probably this has been posted million times around. But i am from the type of the guy i only ask when i want to learn something or when i am curious about something.I hope all of you have a merry Christmas and thanks for your time and cooperation

[fingerguy]

Would you consider starting with a trainer and then eventually train on your own? Based on what you posted, and if I were in your shoes that is where I would start.

[17mahmoods]

Follow a professionally written novice routine. I will link some below. And yes definitely bulk, I doubt you know the exact amount required watch the scale and adjust the weight accordingly.

Why You Should Not Make Your Own Routine
How To Perform Basic Lifts

Routines
Starting Strength
Candito Linear Programs
AllPro's Beginner Routine
IceCream Fitness 5x5
Fierce 5
Viking's Bare Bones Series
Towerbrah’s
Powerlifting to Win

[ManosMyName]

Would you consider starting with a trainer and then eventually train on your own? Based on what you posted, and if I were in your shoes that is where I would start.

Thanks for your advice.

Follow a professionally written novice routine. I will link some below. And yes definitely bulk, I doubt you know the exact amount required watch the scale and adjust the weight accordingly.

Why You Should Not Make Your Own Routine
How To Perform Basic Lifts

Routines
Starting Strength
Candito Linear Programs
AllPro's Beginner Routine
IceCream Fitness 5x5
Fierce 5
Viking's Bare Bones Series
Towerbrah’s
Powerlifting to Win

thank you very much i would gladly check them out

[Luca2]

Great links from Mahmoods. Here's a couple of playlists that cover all basics on nutrition and training principles.

[arnoldspump]

for mass the focus should be on intensity, ie low reps heavy weight with emphasis on eccentric for maximal fiber damage. keep it short and simple with 2 bodyparts per workout, 3 exercices per body part. get out of the gym feed it and recover. dont forget to eat alot of red meat. thats been my protocol still tweeking things out to optimize getting huge with veggies and stuff aswell as proper sups.