How to Make Your Computer’s Browser Use Less Data When Tethering

See:
http://www.howtogeek.com/138658/how-to-make-your-computers-browser-use-less-data-while-tethering/

Transferring files over SSH

Generally, if you want to download, it will go:

scp user@remote_host:remote_file local_file

where local_file might actually be a directory to put the file you're copying in. To upload, it's the opposite:

scp local_file user@remote_host:remote_file

If you want to copy a whole directory, you will need -r. Think of scp as like cp, except you can specify a file with user@remote_host:file as well as just local files.
Edit: As noted in a comment, if the usernames on the local and remote hosts are the same, then the user can be omitted when specifying a remote file.

Source: http://stackoverflow.com/questions/343711/transferring-files-over-ssh

Single-columned Table or Figure after two-columned Text

Use * suffix for the floating element.

 ex:

text text ...................
text text ...................
\begin{table*}[htb]
\caption{}
\begin{tabular}{C{2cm} C{2cm} C{2cm} C{2cm} C{2.1cm} C{2.4cm}}
..........
..........
\end{tabular}
\end{table*}

 Source: http://www.latex-community.org/forum/viewtopic.php?f=35&t=22525