Besides some of the above application, you should also try to use writing in Microsoft Word as eventually, you need to move on from the assisted screen keyboard or hints.

You can start screen typing with some pangrams, which contains all 26 alphabets. Below are some examples.

List of English Pangrams (sentences which contain all the 26 alphabets)

The quick brown fox jumps over the lazy dog.
35 letters (This is the most famous one)

Two driven jocks help fax my big quiz.
30 Letters

Fickle jinx bog dwarves spy math quiz.
31 Letters

Public junk dwarves hug my quartz fox.
31 Letters

Quick fox jumps nightly above wizard.
31 Letters

Five quacking zephyrs jolt my wax bed.
31 Letters

The five boxing wizards jump quickly.
31 Letters

Pack my box with five dozen liquor jugs.
32 Letters

When zombies arrive, quickly fax judge Pat.
35 Letters

Woven silk pyjamas exchanged for blue quartz.
38 Letters

The quick onyx goblin jumps over the lazy dwarf.
39 Letters 

Foxy diva Jennifer Lopez wasn’t baking my quiche.
41 Letters

My girl wove six dozen plaid jackets before she quit.
43 Letters

Grumpy wizards make a toxic brew for the jovial queen.
44 Letters

A quivering Texas zombie fought republic linked jewelry.
48 Letters

All questions asked by five watched experts amaze the judge.
49 Letters

Back in June we delivered oxygen equipment of the same size.
49 Letters

The wizard quickly jinxed the gnomes before they vaporized.
50 Letters

We promptly judged antique ivory buckles for the next prize.
50 letters

Jim quickly realized that the beautiful gowns are expensive.
51 letters