When you start using automation services, not long into your labor you would find yourself with roadblocks, ip blocks and the like. This can seriously slowdown your work and make it almost impossible to keep advancing.
For this it becomes absolutely necessary to use Proxys and to successfully install them to bypass all this roadblocks and limitations.
You can buy your proxies from several sources, i personally recommend Highproxies, they provide low costing proxies, with high quality and no problems.
Also you can make a quicksearch for more Proxy providers and choose the one that fits your needs.
But rest assured the use of Proxies is absolutely necessary when working around automation and captcha solving, you can almost say they go hand to hand.