Today we would call it Corportae Blogging.
I created a product, a blog CMS (very poor on the M) and wanted to convince companies of SEO and blogging. Non of it where anywhere on their radar.
And 0 sales experience from my side.
I fail and realized I needed sales experience. So I applied and became a key account and a slazy company which sold crappy websites to estate agents.
Worst job ever. Learned a lot.
If you want to really learn sales, start selling. Just change your job for a while.