Tulips have a beautiful range of colours, shapes and flowering periods. With such a long flowering period, you can have Tulips in flower in your garden from March to May.
The best time to plant tulips is October and November for a spring display. If you miss the window, you can still plant in December although flowering maybe delay. If you have a particular planting scheme or look in mind, such as pale pink with dark purple, or pink Tulips with Blue forget-me-nots, it is important to check is flowering time. We think of Tulips as spring flowering, and they are, but it is a long period from early March until May. If you are combining colours, you need to pick and mix varieties which flower at the same time.
Besides colour range, there are also a lot of different types of Tulips. There are single flowering, doubles, dwarf and parrot. Tulips also vary in height from 15-30cms. Tulips are versatile and can be grown in containers, beds or in large drifts. Tulips are not fussy about soil conditions with the exception that they do not grow well in wet soils. Tulip are also classified into early, mid-season and late flowering Tulips. Follow this link for more information and images about the different types of Tulips.
If you are looking to buy tulips, Crocus have a good range.
There are a lot of different types of tulips, up to 15 varieties and then dozens of shapes and colours within each varieties. For a good display look for varieties that flower together and plant on mass so there is a really good showing. The Pinterest pages have some really good ideas and colours. More information about different species of Tulip.