Hi Jac! And welcome to MK! The first thing I would recommend doing is completing ALL the tasks under the research and technology links. When you have completed these, the options to start building Gold Mines, Lumber Camps and Farms will be available, along with the ability to train troops.
Once you've completed all of the research and technology missions the current king of celtic radio offered some great advice on advancing in the game in this thread
I see you have gained three workers. You can try to get some more by going to MISSIONS under the POLITICS AREA and goto the "Worker Recruitment". First put in "1" gold, and it will then tell you the minumum you need to recruitment. Put in that value, and if you don't get any, keep trying until you do ... sometimes takes about 10-15 times. Persistence pays off. You don't need many as you begin the game. It will assign you a random number or workers. And then your rate to find workers increases.
Then, under KINGDOM AREA, go to Workers where you will be able to employ them (for a training cost) and even unemploy them.
No problem at all. Once you build up and get a grip on the game you may want to consider joining or forming a clan. You will be hard pressed to make it on your own as you advance; but I'm not saying it can't be done. I personally haven't seen anyone get too far on their own though.