In most Photoshop programs, their is a tool bar with all of your tools on either the far right or far left of your screen. On that tool bar, their should be a small 'T' as one of the options, typically on the right side (if the tool bar is in two rows). Click on that, and either a text box will appear, automatically creating a new layer specifically for text, or you will have to draw a box. Both options will create a new layer. Then, when you're done having your box created, just type, and the letters will be on the new layer. Once finished, you can rasterize the layer (by right-clicking on it) to turn it into a regular layer, and you can then colour the text any way you like, even using gradients. But make sure you lock the layer, first!
Go to "Edit", then in the drop-down menu, scroll down to "Transform", and in the new menu that opens up, click on "Rotate". This will create a box around your text layer, with several points around the corners of it. Click one of these points, and drag it around with your mouse to rotate the text. When you are done, click the check-mark in the upper right-hand corner of the workstation, or if you are displeased with your changes, click the cancel symbol to the left of the check-mark.
Text in Photoshop is vector object, so you can scale, rotate, change size, color without losing quality.
Create a text layer, type out your text, then click the checkmark to confirm you're finished writing. Then double-click to the right of the layer name to open up the Layer Style window from which you can apply various effects. You can also apply other effects to your text by using Filters from the Filter menu, but you will first need to rastarize the layer. You can rastarize a layer by right clicking on it in the Layers pallate, then selecting rastarize from the pop-up menu; photoshop should also ask you if you want to rastarize the layer if you try to apply a filter to a layer that hasn't been rastarized yet. Make sure your text is exactly as you want it or create a duplicate layer before rastarizing. Once you rastarize the layer, you will no longer be able to change the spelling or wording with the text tool.
By default text is vector object and always on Type layer which you can recognize from letter T on thumbnail in Layers panel.
You cant rotate text
Select layer you want to make transparent, then in top right corner of Layers panel type 0 in text field next to Opacity, or click triangle on right side of Opacity to expand slider and drag it to the left till you see 0%. Every new blank layer created in Photoshop is also transparent (Layer > New > Layer...).
There are a number of websites where one can find a Photoshop text tutorial including Smashing Magazine, Hongkiat, Web Design, Photoshop Essentials and Photoshop Lady.
The text can be deleted if you have a .psd file with layers intact, simply delete or turn off the type layer. If the file is flattened use the clone tool and cover the type with whatever is behind the text.
It is the same because as every other layer - text layer can contains transparent areas and can be applied layer style to it including different level of transparency from 0-100%, any of available blend modes, layer mask can be applied or clipping mask to clip content inside letter forms like for example image. Text layer can be moved, grouped, locked or converted to Smart Object as any other layer. Different from regular layer is because contains vector data so you can change size, color and even color of individual characters without any penalty, also font and font style can be changed (shape or design of letters). Other interesting things to do with text layer is to convert characters to shapes and to work with each individual character as separate shape (to change its shape, rotate it, enlarge, move, skew, distort and so on).
Layer > Layer Style.
When you add text to an image in photoshop, it is created as a vector-type addition on a new layer. As long as it stays as such, it can be enlarged/reduced without loss in quality. However, if the layer gets rasterized (eg. flattened/merged) the pixels of the text are treated as any of the other pixels in the image, meaning that when you zoom-in beyond 100%, it gets jagged. It is a characteristic of raster images that can't be avoided.
Layer > New > Background from layer to convert regular layer to Background.
No, Photoshop Elements does not have Contour.