How increment the values in cells in decimal point ordering

I have only used Microsoft excel during college days and now I really regret to have no expertise in the same. I have to enter a set of numbers, indeed they are quite a lot. All the numbers should be in ascending order. The difference between the numbers should be some times 0.5 and sometimes 0.44. It varies a lot. Presently I am doing it manually because I didn’t studied topics on MS Excel. But, better late than never. I will put more efforts towards learning. Kindly give me support to start with.
