iOS4 for iPhone 3GS doesn’t come with the increasingly popular iBooks app. Follow these simple steps to get iBooks on your iPhone 3GS running iOS4.

iOS4 for iPhone has quite a lot of feature enhancements that makes it worth upgrading. Even though the feature set becomes miniscule if you are not using it on iPhone 4 it still is worth upgrading.

Part of iOS4 is a new app for iPhones called iBooks. iBooks is your mobile bookshelf where you can stack all your favorite eBooks from iTunes book store and can read them wherever you are. Certainly a pretty handy app to have on your iPhone.

Even though it’s advertised that iOS4 comes with iBooks, it’s not really unless you have iPhone 4. For iPhone 3GS and 3G users you have to download the app on your own. Getting iBooks manually is not that hard.

All you need to do is search for iBooks on AppStore and install it the regular way (it is a top featured app as of now).

Once installed you can shop for eBooks on iTunes bookstore. Keep in mind that iBooks comes by default with only one sample eBook and so you might want to stack up your iBooks shelf with the books that you like. Just tap on the “Store” button at the top and that will take you to the iTunes bookstore.

Similar to apps, once you pick a book you’ll be presented with the details where you can get the eBook for whatever the price listed.

If you are not sure about the book you can try a sample of the book. Sample books are marked with the word “Sample” in your bookshelf.

The above is a screenshot of a sample book when opened to read. Initial observation is that the font and text and clear and comfortable enough to read on the small device.

If you are ever wondering where iBooks is after you’ve upgraded your iPhone 3GS to iOS4 I hope this guides you in the right direction. Feel free to leave your comments below.