Design loan comparisation start site, menus and the comparisation tool

I need help creating a homepage that is easy to navigate. Everything is created in wordpress and I have to be able to change it later myself. The idea is that it should have a similar appearance and interface as: [login to view URL] The color should be navy blue instead of green and all boxes should be similar to those on Lendo. The site must look very professional and be very easy for customers to find and navigate. In addition to the start page, there should be a subpage where you compare loans for companies that look the same as the start page. I have a comparison tool that I use today but do not have the opportunity to do it nicely. The main thing is that I can easily change the information from the banks as soon as their interest rates or fees change. Because my knowledge is limited today, it must be easy for me to change this.