Whenever i uploaded pictures in an album i never had an option to change the album cover. Even if you try to edit the album or its settings it doesnt give you that option. The organize option of the google+ gives the option to organize the photos in the first page but not all the pictures of the album. The only way you can do this is by uploading via google picasa application installed in your computer. You have to first drag the pictures around and arrange the in an order that you want and keep the picture that you want as the album cover in the beginning of this order and then click on share on google+. You can initiate this by right clicking on a bunch of pictures that you have selected and then click on add to album>new album and publish it as an album in picasa and then click on share on google+.
since stackexchange is becoming like reddit and wikipedia where unknown , behind the mask moderators run these sites like dictatorship, I have decided to add answers here. Chanting and reading are different. Vedic Chanting has two parts - Tone and Recitation (Patha). It further has four different tones - Udatta, Anudaatta, Svarita and Deergha Svarita. Pathas are the styles of hymnal recitation. So unless your are are well skilled in these and your pronouncination, enunciation is accurate, you are not supposed to chant. Chanting the same mantras in different way produces different effects, different vibrations. Many a times a slight difference in spacing, intonation, pronounciation, enunciation produces different meanings. So unless you are classically trained to chant these, one shall avoid it but can read them with sound without making a sound, silently. Ex: Many in north india swap va & ba. Ravindranath tagore becomes rabindranath tagore. Many in north india also swap ra & da