Struggling with WooCommerce setup

Hi, first posts here…

I have been using WP for about 18 months, loving it so far. Most sites are brochure sites or simple B2C Woo sites.

But I am struggling to move my own site away from OpenCart to Woo, because I cannot workout how to set certain things up.

So using Opencart…
I have several customer types (Normal, Wholesale 1, Wholesale 2, Wholesale 3… etc)

A customer is assigned to a customer group type, and from that the products can have different pricing for each group. For example.

Shoes = £10 (Normal)
Shoes = £8 (Wholesale 1)
Shoes = £7 (Wholesale 2)
Shoes = £6 (Wholesale 3)

I can also hide certain products and categories in OpenCart from general view, until that specific customer is logged in. This then makes the following…

hat = £10 (Normal) – Not Visible
hat = £8 (Wholesale 1) – Not Visible until logged in
hat = £7 (Wholesale 2) – Not Visible until logged in
hat = £6 (Wholesale 3) – Not Visible until logged in

While this functionality is built into OpenCart and easy to implement, I cannot even figure out what plugins I need to add to achieve this with Woo

please help