Networking and cold calling is one way to do so. Find the companies that you would like to work in. Then find someone who's doing a job similar to what you would like to do (on linkedin). Call the main phone number for that company, ask to be transferred to that person and then proceed to do an informational interview. Ask them questions about the industry, how to get in, what their job is like and if they can recommend other people that could help you. Once you've gotten a good feel for company/industry, look for the hiring managers on linkedin - not talking about human resources. If you want to work as a sales man talk to Sales Manager. This is where you do your sales pitch and tell them about your skills and ask them "when would be a good time to talk about opportunities in your company". Don't ask "yes or no" questions.