Enroll in a network engineering degree program. These are available at universities, local colleges and tech schools. Most employers prefer a bachelor's degree, but there are also people working in the field with associates or technical degrees.
Locate an internship or volunteer in the IT department of a corporation, church or non profit organization. This type of internship will allow you to put into practice the knowledge you acquire during your coursework, and allow you to learn and deal with thin client networking issues.
Apply for part-time or contract work with temporary technology job placement agencies. This type of work is contract work and often a job only lasts a few weeks. But in that period you will learn to set up thin client networks and get a better understanding of how they work. This type of job is easier to qualify for than a permanent position, and gives you the job experience you need when you finish your degree.
Take networking certification courses and tests , such as Microsoft Certified Systems Engineer (MCSE,) CompTIA's Network Certification, CCNA Cisco certification and the Cisco Certified Network Professional (CCNP) certification. These certifications have different coursework requirements and fees, but the more certifications you have, the more favorable you will look to future employers.
Apply for a networking position at a large corporation or business, once you have finished your degree and have one or two network certifications. According to the Bureau of Labor Statistics, you can expect a median income of about $56,000 as a thin client network engineer.