Final answer:
A first letter submitted to show interest in a job is called a letter of application. It should be tailored, concise, and focus on how one's qualifications meet the company's needs, accompanied by a resume designed to secure an interview.
Step-by-step explanation:
When expressing interest in a job and introducing oneself along with qualifications, interest, and availability, the first letter submitted is called a letter of application. It is crucial to customize the cover letter for each position, making sure it's brief, well-organized, and correctly spelled. One starts by stating the motivation for writing the letter, naming the position and how they heard about the job. When writing the application letter, focusing on the company's needs and how one can be an asset is essential. In the first paragraph, one should capture the reader's attention, introducing themselves, explaining the job source, and expressing the desire to work there. It is important not to focus solely on personal needs but to align with the company's, reiterating one's qualifications and including a resume that details skills and experiences relevant to the job.
The cover letter should be concise, about half a page to one page in length, leaving plenty of white space. It is advised to proofread the document carefully and, if possible, get feedback from a trusted advisor or friend. The application letter, accompanied by a resume, aims to secure an interview, not immediately the job itself.