Whats the difference between all four plans ? and few questions

There are 4 plans -

1-> 1 month session 6.98 €

2-> 3 unlimite session 59.98€

3-> 1 unlimite session 24.98€

4-> trial access 1€

What exactly session means ?!?

Why there are /3 Session - Lifetime & 1 Session - Lifetime / on second and third plan ? what does lifetime means ?

Is it the same if i bought trial access for 3 days ,will i get everything or not ?

Which plan is the best ?

Which plan is better for people who doing this for first time and would farm gold whit it?

Why i should choose Honorbuddy?

Is it safe?

How much time i should farm each day and never get caugh from blizzard?

Whats the difference between all four plans ? and few questions