Things that have worked for us is basically focusing on basics -

• Write lots of topical content

• Think about the core user and write content to capture their entire decision making journey

• In depth, well researched content that will be used as a reference for others. Its fairly slow from link perspective but you get really high value links over time.

• Interlink content really well - keep it topical and meaningful.

• After few months, category pages will start to rank.