Ok, you have done a good job of starting to build some construction sites. Those will pay big dividends in the long run because you'll spend way fewer turns building which will allow you to spend more turns gaining land.
Right now you are building some of everything basically which makes good sense in real life where self-sustainability is strategically very important. Here specialization is more effective because there are governments which give you certain production bonuses as well as technologies that help one specific area of production. Certainly you can get more than one type of technology - it is just going to cost a lot more money.
I recommend you select a basic strategy and stick to it. I recommend industrialist, farmer or casher.
If you select industrialist you will build mostly industrial complexes (although you of course need construction sites). You will make all of your own military but you will lose money and food every turn. To make up for this you will sell military on the public market which will provide the cash you need to buy your food and fund your turns.
If you select farmer you will make bushels of food. You may or may not lose money every turn - that depends how much military you buy. You will sell your food on the market and use that money to buy military and fund your turns if you do not have positive cash flow.
If you select casher you will build equal proportions of enterprise and residential zones. You will have positive cash flow but need to buy your food and military.
Different governments will give different bonuses that help some strategies more than others. As an industrialist you will probably want to have a communist government since it has an industrial production bonus. Fascism has a food production bonus and republic has a per capita income bonus which is good for casher. There are other governments which can also work for these strategies but those are the most common pairings for those strategies.
More information on strategies and governments can be found at the following links.
http://wiki.earthempires.com/...x.php/Category:Strategies
http://wiki.earthempires.com/index.php/Governments