You must know what are the requirements of the given task that you will perform. This will give you a good idea as to what is needed and what you will not need for the given task. If you are looking to acquire tools for general purpose and not a specific job, you must make a list of tools that you will need in general course of work. Make sure that you carefully ponder over the options to not miss anything that you may need.
Your Preferred Tools
Every person has his or her favourite tools. These could be tools of a specific kind or from a certain make that you are comfortable working with. While you make the list of tools that you are planning on getting, be sure that you keep the preferences in mind. Working with the kind of tools that you are comfortable with can help you in increasing the efficiency at work and can help you in performing the work better as well. Being comfortable with a tool is very important to help you in doing the work right.
Before going ahead, take suggestions from people who have performed similar tasks. Go through your own tools on similar jobs if you have performed these before. This will be a good guide for you. You can also check the internet and see what tools are being suggested on various discussion forums to further have an idea as to what will work better.
Once you know what you will need, you should go ahead and make the purchase. The people at the hardware store can also help you by providing their feedback on the best tools that are available for your preferred work. You should be able to pick the right tools.