Don't build small sites and point on big one - it is useless, your small sites will have no authority same as your main site. If you need links - buy them from people who already has small or big sites with history, RP and backlinks - it will make some sense. Otherwise you will have 10 domains (90$) plus 10x10 posts just for start (100-150$ at least and it is just for beginning!). Plus big G will find out about your network and will give small weight to your back links.
But may be you are blog writing genius and your blog posts will attract some visitors attention..."busty milf with heavy juggs taking cum load on her pretty face" will not work
If you have blog writing passion then after 1 year you will get some results. Until next google algorithm change
Do traffic trade with other tubes, buy traffic from broker and trade with other tubes. You will have to learn about it too.