Ask HN: I am doing $2M annually as a solopreneur and need your help

I work as a sole founder with little work outsourced and an employee to help with chores. My technical background coupled with marketing exposure I am able to enjoy awesome profit margins in my eLearning business. I now plan to expand my offerings and hence team but have no clue where to start. I don't want a co-founder as such. Right from the smallest of technicalities like giving control of my domains, server, sites to employees scares me. Then whom should I hire first, a core employee or a HR person? I have never dealt with such stuff and no clue how to proceed. How do small companies deals with such issues? Is there any exhaustive resource/course/book/video/case-study which lays down a process to take a 1 man company to a 'n' person organization? Sorry for my naivety. Would love to get answers from the super awesome HN community.