Search Results: settling down

Part 1. Sorry for this long post
Part 2. In the comments.

I've been thinking about this for the last 2 weeks & can't decide what is best to do & i though i could use some extra help here.

First i'm 27 & have 2 years experience in the IT field, used to work as a sales person before, and used to change my job almost every 1 year & a half.

So. Currently i work as an IT officer/manager in a company, i work alone in that department, with a very low salary, below expectations.

I used to work before as an IT assistant in a hospital for 2 years. I had a slightly better salary, & was too comfortable in my job in the last year.
But i though that there isn't any way to move on in my career in terms of position & salary in the hospital, so i though it is time to change & try to learn new & more stuff and have more experience elsewhere, so i can have the chance to develop more my CV & experiences, before settling down in any company later in my career.

So i've started searching & had interviews in many companies until this one i work for now.
First impression about the conpany was really good. The work schedule is good, and the staff environment are friendly & helpful, HR & GM told me that i have the chance with them to move in both terms of salary & position later in my career.
So i've waited for the employment offer. The salary was very low, i've called the HR department to consider the salary they offered me & they said that this is the final offer, but they promised me that i will have a raise of 100$ after the 3 month trial.

So i have decided to accept their offer in these terms. & though about it that this is the best way to help me move higher in my career, even though the salary was still at least 200$ below expectations.

The first day i came to start my new job. I was told the old IT person in my position was fired a week before, & there is no one to handover & tell me anything about the job.

Part 2 in the comments