There are several internet resources that you can use to assist you with your repairs. Automotive forums are one great resource for tracking down the necessary information you may need to complete the repair. If you can't find the information by looking through the lists of previous posts you can always register and leave a question of your own and wait for another member to share what they know with you. There are literally hundreds of Automotive forums and most makes and models are catered for. These forums can be found by doing a search for automotive forums followed by the make and model of your vehicle.
Another resource is websites that offer personal advice from a suitably qualified person, usually done by email or on the web page itself. There are a few sites that offer this service for free although some sites require payment for their services. The advantage of this type of service is that you are getting information from a qualified person and they can usually provide step by step instructions for your particular repair. You may be lucky with a forum and get a response from someone that has experience and is willing to share their knowledge with you, however they are a bit 'hit and miss' as to the quality of information that gets passed on.
The only downside to attempting repairs yourself is that you may not have the necessary tools or equipment. Before attempting the job investigate what tools may be required and if they can't be bought for a reasonable price there are many equipment hire outlets that carry a good range of automotive tools. Hiring the necessary tools obviously works out cheaper and it makes sense if you are unlikely to use the tools again once the repair is completed.
The feeling of satisfaction that comes from doing something yourself, particularly if it is something that is new to you is great. Next time you have car trouble and before you reach for the phone to call your mechanic why not jump online and see what information you can find on your particular problem and you never know you may find all you need to complete the repair and save yourself heaps of money in the process.